There are some books that are simply intended to be entertaining. There is no higher message, it's just meant to be enjoyed. Tarnsman of Gor is one of those books. It is reminiscent of Burrough's John Carter of Mars books (which inspired stories like Superman), but is placed in a setting that is much more violent. Tarl is a British professor thrown into this environment, which very much makes him a fish out of water, but the smaller planet allows him the physical abilities to make his physique come up and match his intellect. Don't come here looking for some underlying message. Just enjoy the story, the world building, and the characters.